Workshop › Puzzle Bobble-style Bubble Shooter › Step 23 of 31

Count the shots

What we are doing

To keep the pressure on, the ceiling will come down one row every 8 shots. First we count the shots and the rows it has come down.

```js
const DROP_EVERY = 8 // shots between the ceiling coming down
let shots
let drop // how many rows the ceiling has come down
  shots = 0
  drop = 0

  shots += 1

  if (shots % DROP_EVERY === 0) drop += 1
```

What it means

• Every bubble that lands counts as a shot.
• shots % DROP_EVERY === 0 is true on shots 8, 16, 24...: then drop goes up by one.

Your turn

1. Under SPEED, write DROP_EVERY; under let score, write shots and drop; in reset, under score = 0, set both to 0.
2. In attach, count the shot under grid[r][c] = color, and write the drop line at the very end.

Skills: Game states

← Only useful colors The ceiling comes down →

All steps

1. The night sky
2. One bubble
3. A grid of cells
4. Draw the grid
5. Bubbles that nest
6. The shooter
7. Aim upwards
8. Turn with the arrows
9. Aim with the pointer
10. Fire!
11. Fly
12. Bounce off the walls
13. Touching something?
14. Stick into the grid
15. Smaller steps
16. Six neighbours
17. Flood fill
18. Three in a row pop
19. Bubbles that fall
20. Cut them loose
21. Show the score
22. Only useful colors
23. Count the shots
24. The ceiling comes down
25. Win or lose
26. The danger line
27. The end message
28. Play again
29. Best score
30. A dotted guide
31. Build it yourself: swap bubbles